3 years ago

What is the solution to j + (-3) = 9?

Mathematics

1 answer:

Stels [109]3 years ago

8 0

Answer:

j = 12

Step-by-step explanation:

j + (-3) = 9

j = 12

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Which equation gives the value of the circumference, C, of a circle with a diameter of 56 feet?

Alik [6]

Answer:

$C=\pi (56)$

Step-by-step explanation:

we know that

The circumference of a circle is equal to

$C=\pi D$

where

D is the diameter

in this problem we have

$D=56\ ft$

substitute

$C=\pi (56)$ -----> equation that give the value of the circumference

$C=56 \pi\ ft$

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2 years ago

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Alexandra bought a hat that costs 14 dollars and a watch that costs 6 dollars. At the counter she received a discount. If she pa

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Answer:

It was a 25% discount

Step-by-step explanation:

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I hope this helps.

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2 years ago

How many solutions does the equation have 4x + 3=2(2x +9)

lbvjy [14]

I guess no solution
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3 years ago

Use the grouping method to factor the polynomial below completely.<br> x - 4x² + 3x - 12

N76 [4]

Answer:

6xsquare

Step-by-step explanation:

that is my answer

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2 years ago

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I need help with three and four

mart [117]

Answer:

3: $a^{2}+2ab+b^{2}$

4: $8x^{3} -12x^{2}+6x-1$

Step-by-step explanation:

Question 3 can be re-written as:

$(a+b)(a+b)$

which equals:

$a^{2}+2ab+b^{2}$

Question 4 can be re-written as:

$(2x-1)(2x-1)(2x-1)$

Doing the first 2 brackets gives us:

$(4x^{2} -4x+1)(2x-1)$

Expanding these two:

$8x^{3} -4x^{2} -8x^{2} +4x+2x-1$

Simplifying it:

$8x^{3} -12x^{2}+6x-1$

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2 years ago

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